Electrical conduit and wire ground connection



Jan. 1, 1935. C L. G TERRY 1,986,028

ELECTRICAL CONDUIT AND WIRE GROUND CONNECTION Filed Aug. 20, 1929 INVENTOR. Lloyd 6. J rry- BY l CIM' ATTORNEYS.

ground pipe 7 as shown at the left side in Fig 1 or each U-bolt may be positioned to include said pipe '1 between its limbs a's-shownatthe rightside? in Fig.1.

An insulated neutral or white wire :,30-i s shown extending from the free end oi conduit 6, this wire being grounded by inserting -its'exposed end-3-1 between the clamping nut 15 and a terminal nut 32, one end of the U-bolt 8 may be, if desired, lengthenedsandiprovided:withf additional threads terminalenut 32;- Azrysuitable meansmay bepro- -.vided'to. connect win e to the-base platedl. so as 1 lsaid parallel planesand=having1-a two wayseatc'25 l vfiltzwill be seenthat the device. is .rrery-simple-in .3 2 to form a. ground. connection.

:. its :constructicmand use,; .eachzunitthereof comwprising a plurality oi-awbolts-thatareadaptectto encircle twolpipes; together with the spacer block ;30 IOtherebetween, in such amannemthatwhenthe nuts 15 are tightened thebase'plate' .11 is brought into close contact with. the ground conduit. 'Zyand also the spacer block.10:isicauseditdiormia close I contact betweenzthe pipes;v or 'conduits between bond of electric-conduction is formed betweentthe round pipe. .7 and. the electricalaconduit pipe asso- :4 ciated therewitnthezu '-bo1ts;and.clamping1block or. baselplate; 11 'forminmone; bond, and-the spacer In a grounding: connection for elongate cy- 5 block .10; forming .anotherbond;

- ...:;I Et isnot necessary, inqordertoforman efiicient electric. bond. that: a; pipeconform in. curvature 4 .to, the: Spacer. block groove. in which .itvis seated 1 or that: the pipeconformto the seaty26 inb'ase ;.plate:.11-,- and there'iore (by making such, grooves :3, 101-: greater radii-than the. smallest pipe or c d usually usedlia sin ledevice. embodying. the inzapertures'for the purposet'setiorth;

. 5. 'In a. grounding connection a connecting device; comprising a base. plate havingwa. seat .ex-

' 50 vention.mayrenicientlybeused toembraceanum- .ber of; pipes of; sreatenandzvarying 'diameter.+-;.

. :Bvtightly screwingunthe. nuts :15; the-arms of each 0lt. are: Drung:.-inwardly or. toward each other ,with'the resultthata continued5 .v sprin 4 .55 tension isalways exerted gon. .the'parts, to maintain them in lcseconnection so that exnansionnr co n: the groove 21 .:of-.thespacer block? 10 as-seen in ,-the,unitA-at;.the left end..-.of-..Fig-. 1; but; when the -electric conduit extends) parallel to; the: ground n n aidzelectric conduit (designatedcinunit additionalpartsif;

'; that the l invention is; adapted i to: secure together two elongate members; .the axesi'of which extend raf Lin adjacent, isubstantially: paralleleiplanesg the spaced or seatingzielement occunyin athe; space bers together to re enueemen bond there- B sseat dizinith zsr cvergowor fiaidvblocki 10; I

The interchan eablegelationoi. thee. :bolts .tothe base plate 1.1, alreadylrexplained, makes: possible I the adjustment just described without. requiring 5 1 1each otherya'spacerhaving grooves forming seats 1 Fromtheforegoing descnption; .it::=will .heiseen the spacing element is not so important as its capacity for aiiording seats in which the two elongate members are held in the proper relative positions under the binding action of the clamping means. 5

I claim: 1. In a grounding device, two elongate members one of which is adapted to form a ground,

:a; spacer between. said members; clamping 'meanstodraw Said.n1embersforcibly.into con- 1 tact with opposite sides of said spacer, said spacer .;.'having a two-way seat, to adjustably receive one of said members andan opposed seat to receive plate havingholesto receive the limbs of said "U-bolts to permitthem to be arranged in either pttwo directions which are at angles to each other; two elongate members adapted to be in- 0 cludedwithin said ,U bolts, the" axes-of. said memat 80 in order to provide room-for screwing You said bers lying". substantially. parallel planes; and a spacer for insertion: between said tubularm'embers, said -spacer occupying the space: between for one'oisa'id :membersand alsda' seat for. the

other of said members.

- 3.:In. a grounding connectiomafconnectingdevice comprising two co-operating. U-bolts; a base plate having four quadrangularly: disposed holes to-receive the limbs of said U-bolts to permit them to be arranged in either 'ottwo directions which .are at angles totgeach': other: two; elongate members adapted to: beincluded within said U- bolts the axes of said members lying in substantially parallel planes; andal spacer-for insertion between said tubular members, .said spacerabeing located between said planes and having: intersecting grooves. oneone-is'urface. and having ;a

groove. in. its opposite surface. said; members 40 adaptedto be received-in said grooves.

lindrical bodies, a connecting device" comprising a base plate 'havingsa pluralityoi .aperture'sitherein' and a groove extendingxiromend-to end; at

spacer having a. groove. which forms-a: seatv on -one surface. and oppositely'-disposed==grooves which Iorm seats. on its: opposit'eiesurface; and

clamping: means adaptedto extend: through said tending along its mid length from endatoend thereof and into which a. groundconnection is adapted .to-beseated; azispacer havingahseataifi adap ed-torecem id r d member and being adapted on the side opposite said seat to iv aa end i ie er l e i th said ground membe ne u ar let aew a d-s i e memb f; :said base plate having vaperturestliereinc a'xes oiwhi'ch" extend in adjacent substantially parallel 5 planes which are in spaced relation to toreceive said members; andaclamping device'fl to draw said members toward'ea'ch other and in contact with the. seats onsaidspacer; said clamping device comprising two era-operating U.- -bolts the limbs of each of which straddle one orlsaid between these planes. The spacing :iuncticn of .memberafland; a base. plate; which: engagesitheaw outer side of the other of said members, the end portions of said U-bolts being operatively related to said base plate.

7. An article of manufacture comprising a base plate having a seat extending along its mid length from end to end thereof and into which a ground connection is adapted to be seated; a spacer having a groove forming a seat adapted to receive said ground member and also having grooves to form seats on the side opposite said first mentioned seat adapted to receive a'conduit in-parallelism with said ground member and in angular relation with said ground member; said base plate having apertures therein symmetrically arranged around the center portion thereof; and

means extending through said apertures and adapted to embrace a conduit member seated in one of said seats to secure said parts and members together.

8. An article of manufacture comprising a base 'therebetween. e

plate having a seat into which a member is adapted to be seated; a spacer having a seat adapted to receive said member, and being provided on its side opposite said seat with a plurality of seats adapted to receive a conduit that extends in parallelism with or in angular relation to said member; and means to draw said member and conduit toward each other andinto their respective seats in said spacer to provide an electrical bond 9. An article of manufacture comprising a spacer having a groove forming a seat on one side thereof and having on its side opposite said seatfintersecting grooves forming a two-way mom G. TERRY. 20 

